37{
38
39 int nGood=iGood.size();
40 int nGam=iGam.size();
41
42 iGoodtag.clear();
43 iGamtag.clear();
44
45 double mass_bcgg, delE_tag_temp;
46 int m_chargetag,m_chargepi1,m_chargepi2;
47 int ipi1_temp,ipi2_temp,ipi3_temp;
48 HepLorentzVector kmfit1,kmfit2,kmfit3,kmfit4,pddd;
49
50 HepLorentzVector pddd_temp;
51 IDataProviderSvc* eventSvc = NULL;
52 Gaudi::svcLocator()->service("EventDataSvc", eventSvc);
54 SmartDataPtr<Event::EventHeader> eventHeader(eventSvc,"/Event/EventHeader");
55
56 int runNo=eventHeader->runNumber();
57 int rec=eventHeader->eventNumber();
58
59 double xecm=2*Ebeam;
60
61 pipimd=false;
62 double tagmode=0;
63
64 if((evtRecEvent->totalCharged() < 2)){ return; }
65
67
69 Gaudi::svcLocator()->service("SimplePIDSvc", simple_pid);
70
71 double deltaE_tem = 0.20;
72 int ncount1 = 0;
73
74 Hep3Vector xorigin(0,0,0);
76 Gaudi::svcLocator()->service("VertexDbSvc", vtxsvc);
78 {
81 xorigin.setX(dbv[0]);
82 xorigin.setY(dbv[1]);
83 xorigin.setZ(dbv[2]);
84 }
85
86 double xv=xorigin.x();
87 double yv=xorigin.y();
88 double zv=xorigin.z();
89
91 HepPoint3D IP(xorigin[0],xorigin[1],xorigin[2]);
92
93 for(int i = 0; i < evtRecEvent->totalCharged(); i++) {
95
96 int ipi1= (*itTrk)->trackId();
97
98 if(!(*itTrk)->isMdcKalTrackValid()) continue;
101
102 m_chargepi1=mdcKalTrk1->
charge();
103 if(
abs(m_chargepi1) != 1)
continue;
104
105
107 HepSymMatrix Ea1 = mdcKalTrk1->
getZError();
108
109 VFHelix helixip3_1(point0,a1,Ea1);
110 helixip3_1.pivot(IP);
111 HepVector vecipa1 = helixip3_1.a();
112
113 double dr1 = fabs(vecipa1[0]);
114 double dz1 = fabs(vecipa1[3]);
115 double costheta1 =
cos(mdcKalTrk1->
theta());
116
117 if ( dr1 >= 1.0) continue;
118 if ( dz1 >= 10.0) continue;
119 if ( fabs(costheta1) >= 0.93) continue;
120
121 if(PID_flag == 5) {
124 }
125
127
128
129
130
131 for(int j = 0; j< evtRecEvent->totalCharged();j++) {
133
134 int ipi2= (*itTrk)->trackId();
135 if(ipi1==ipi2) continue;
136
137 if(!(*itTrk)->isMdcKalTrackValid()) continue;
140
141 m_chargepi2=mdcKalTrk2->
charge();
142 if((m_chargepi1 + m_chargepi2) != 0) continue;
143
144
146 HepSymMatrix Ea2 = mdcKalTrk2->
getZError();
147 VFHelix helixip3_2(point0,a2,Ea2);
148 helixip3_2.pivot(IP);
149 HepVector vecipa2 = helixip3_2.a();
150
151 double dr2 = fabs(vecipa2[0]);
152 double dz2 = fabs(vecipa2[3]);
153 double costheta2 =
cos(mdcKalTrk2->
theta());
154 if ( dr2 >= 1.0) continue;
155 if ( dz2 >= 10.0) continue;
156 if ( fabs(costheta2) >= 0.93) continue;
157
158 if(PID_flag == 5) {
161 }
162
164
165
166 HepPoint3D vx(xorigin.x(), xorigin.y(), xorigin.z());
167 HepSymMatrix Evx(3, 0);
168 double bx = 1E+6; Evx[0][0] = bx*bx;
169 double by = 1E+6; Evx[1][1] = by*by;
170 double bz = 1E+6; Evx[2][2] = bz*bz;
172
173
179 if(!vtxfit->
Fit(0))
continue;
181
184
185 HepVector pip_val = HepVector(7,0);
187 HepVector pim_val = HepVector(7,0);
189
190 HepLorentzVector P_PIP(pip_val[0],pip_val[1],pip_val[2],pip_val[3]);
191 HepLorentzVector P_PIM(pim_val[0],pim_val[1],pim_val[2],pim_val[3]);
192
193 P_PIP.boost(-0.011,0,0);
194 P_PIM.boost(-0.011,0,0);
195 pddd = P_PIP + P_PIM;
196
197 double ppipi = pddd.rho();
198
199 double temp1 = (
ecms/2)*(
ecms/2)-ppipi*ppipi;
200 if(temp1<0) temp1 =0;
201 double mass_bc_tem = sqrt(temp1);
202 if(mass_bc_tem < 1.82 || mass_bc_tem > 1.89) continue;
203
204 double delE_tag_tag =
ecms/2-pddd.e();
205
206 if(fabs(delE_tag_tag)<deltaE_tem){
207 deltaE_tem = fabs(delE_tag_tag);
208 delE_tag_temp = delE_tag_tag;
209 mass_bcgg = mass_bc_tem;
210
211 pddd_temp = pddd;
212
213 ipi1_temp=ipi1;
214 ipi2_temp=ipi2;
215
216 ncount1 = 1;
217 }
218 }
219 }
220
221 if(ncount1 == 1){
222 tagmode=19;
223 if(m_chargetag<0) tagmode=-19;
224 tagmd=tagmode;
225 mass_bc = mass_bcgg;
226 delE_tag = delE_tag_temp;
227 cqtm = -0.0;
228
229 iGoodtag.push_back(ipi1_temp);
230 iGoodtag.push_back(ipi2_temp);
231
232 iGamtag.push_back(9999);
233 iGamtag.push_back(9999);
234 iGamtag.push_back(9999);
235 iGamtag.push_back(9999);
236
237 ptag = pddd_temp;
238
239 pipimd=true;
240
241 }
242}
EvtRecTrackCol::iterator EvtRecTrackIterator
double cos(const BesAngle a)
const double theta() const
static void setPidType(PidType pidType)
virtual double probKaon()=0
virtual void preparePID(EvtRecTrack *track)=0
virtual double probPion()=0
virtual bool isVertexValid()=0
virtual double * SigmaPrimaryVertex()=0
virtual double * PrimaryVertex()=0
const HepVector & getZHelix() const
const HepSymMatrix & getZError() const
void AddTrack(const int number, const double mass, const RecMdcTrack *trk)
WTrackParameter wtrk(int n) const
void AddVertex(int number, VertexParameter vpar, std::vector< int > lis)
static VertexFit * instance()
void setEvx(const HepSymMatrix &eVx)
void setVx(const HepPoint3D &vx)
_EXTERN_ std::string EvtRecEvent
1.9.6